Ultra Jr., V. U., Tan, G. M., Lau, F. U., Ponsalan, M. R. O., Galo, E. A.. (1396). Nutrient Availability and Biological Properties of Paddy Soils Under Rainfed Traditional “Payatak” Farming Systems in Catubig Valley, Philippines. , 19(Supplementary Issue), 1631-1645.
V. U. Ultra Jr.; G. M. Tan; F. U. Lau; M. R. O. Ponsalan; E. A. Galo. "Nutrient Availability and Biological Properties of Paddy Soils Under Rainfed Traditional “Payatak” Farming Systems in Catubig Valley, Philippines". , 19, Supplementary Issue, 1396, 1631-1645.
Ultra Jr., V. U., Tan, G. M., Lau, F. U., Ponsalan, M. R. O., Galo, E. A.. (1396). 'Nutrient Availability and Biological Properties of Paddy Soils Under Rainfed Traditional “Payatak” Farming Systems in Catubig Valley, Philippines', , 19(Supplementary Issue), pp. 1631-1645.
Ultra Jr., V. U., Tan, G. M., Lau, F. U., Ponsalan, M. R. O., Galo, E. A.. Nutrient Availability and Biological Properties of Paddy Soils Under Rainfed Traditional “Payatak” Farming Systems in Catubig Valley, Philippines. , 1396; 19(Supplementary Issue): 1631-1645.


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